<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>
</html>
<script>
    var arr=[-1,3,-5,7,-9]
    for(var i=0;i<arr.length;i++){
        if(arr[i]>0){
            document.write(arr[i]**2)
        }
    }
</script>